$729+ Cheap flights from Porto Alegre (POA) to Seattle (SEA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Oct 26 — Nov 21
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Porto Alegre to Seattle with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Porto Alegre to Seattle
Cheapest
Best
One-way
Cheapest flights from Porto Alegre to SeattleExplore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
Explore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 26, 2026.
This GOL deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:40 pm -
2 stops33h 19m
Sat 2/207:30 am -
2 stops30h 25m
Deal found 9/23![GOL logo]()
$1,104
This 123 Milhas deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:30 am -
2 stops21h 25m
Sat 2/209:55 pm -
2 stops27h 45m
Deal found 9/22![LATAM Airlines logo]()
$1,120
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:30 am -
2 stops21h 35m
Sat 2/209:20 pm -
2 stops28h 20m
Deal found 9/25![Delta logo]()
$1,135
This LATAM Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:40 pm -
2 stops25h 50m
Sun 11/156:00 am -
2 stops19h 40m
Deal found 9/24![LATAM Airlines logo]()
$1,176
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:45 pm -
3 stops35h 13m
Sat 2/2010:40 pm -
2 stops33h 15m
Deal found 9/22![United Airlines logo]()
$1,191
This Trip.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:30 am -
2 stops25h 24m
Fri 11/138:07 am -
2 stops35h 18m
Deal found 9/22![Multiple Airlines logo]()
$1,283
This Flightnetwork deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:10 pm -
3 stops26h 27m
Fri 11/137:45 am -
3 stops25h 55m
Deal found 9/22![Air Canada logo]()
$1,380
This Trip.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:35 am -
2 stops34h 05m
Sun 1/32:30 pm -
2 stops25h 30m
Deal found 9/22![Multiple Airlines logo]()
$1,563
Best flights from Porto Alegre to SeattleDiscover carefully curated flight deals from Porto Alegre to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
Discover carefully curated flight deals from Porto Alegre to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 26, 2026.
This GOL deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/912:30 pm -
2 stops28h 00m
Wed 2/247:30 am -
2 stops28h 10m
Deal found 9/23![GOL logo]()
$1,073
This Delta deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:30 am -
2 stops21h 35m
Sat 2/209:20 pm -
2 stops28h 20m
Deal found 9/25![Delta logo]()
$1,135
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/33:45 pm -
3 stops35h 13m
Sat 2/2010:40 pm -
2 stops33h 15m
Deal found 9/22![United Airlines logo]()
$1,191
This Flightnetwork deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/63:30 pm -
2 stops34h 29m
Fri 11/137:45 am -
3 stops25h 55m
Deal found 9/22![Air Canada logo]()
$1,394
This GOL deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:40 pm -
2 stops33h 19m
Sat 2/207:30 am -
2 stops30h 25m
Deal found 9/23![GOL logo]()
$1,104
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/74:05 pm -
3 stops33h 05m
Wed 2/248:00 am -
2 stops25h 50m
Deal found 9/22![United Airlines logo]()
$1,191
This American Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:25 pm -
3 stops24h 50m
Sat 2/207:30 am -
3 stops21h 45m
Deal found 9/22![American Airlines logo]()
$3,353
This Booking.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/243:45 pm -
2 stops34h 14m
Sun 1/38:40 am -
3 stops25h 20m
Deal found 9/22![Air Canada logo]()
$2,444
One-way flights from Porto Alegre to SeattleSearch for one-way flight options from Porto Alegre to Seattle. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
Search for one-way flight options from Porto Alegre to Seattle. Find affordable one-way fares based on user searches. Data last updated September 26, 2026.
This GOL deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:30 pm -
2 stops35h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![GOL logo]()
$729
This Air Canada deal was found by Cheapflights users on 9/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:45 pm -
2 stops34h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Air Canada logo]()
$746
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:30 pm -
3 stops28h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![United Airlines logo]()
$822
Find flight deals from Porto Alegre to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,067 (LATAM Airlines) |
One-way from | $729 (GOL) |
Popular in | July |
Cheapest in | May |
Average price | $1,063 |
Cheapflights Fare Finder
Customize your flight search to find flights from Porto Alegre to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 26, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 11/5
5:30 pm-11:59 pm
2 stops35h 29m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-5:00 am
Nonstop0h 00m
$729
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 11/5
3:45 pm-8:59 pm
2 stops34h 14m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-5:00 am
Nonstop0h 00m
$746
Quickest round-trip
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 11/5
3:30 pm-2:39 pm
3 stops28h 09m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-5:00 am
Nonstop0h 00m
$822
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Tue 2/9
12:30 pm-11:30 am
2 stops28h 00m
Seattle/Tacoma Intl
Wed 2/24
7:30 am-4:40 pm
2 stops28h 10m
$1,073
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 12/3
7:40 pm-11:59 pm
2 stops33h 19m
Seattle/Tacoma Intl
Sat 2/20
7:30 am-6:55 pm
2 stops30h 25m
$1,104
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 12/3
7:30 am-12:05 am
2 stops21h 35m
Seattle/Tacoma Intl
Sat 2/20
9:20 pm-6:40 am
2 stops28h 20m
$1,135
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 12/3
3:45 pm-9:58 pm
3 stops35h 13m
Seattle/Tacoma Intl
Sat 2/20
10:40 pm-12:55 pm
2 stops33h 15m
$1,191
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Sun 2/7
4:05 pm-8:10 pm
3 stops33h 05m
Seattle/Tacoma Intl
Wed 2/24
8:00 am-2:50 pm
2 stops25h 50m
$1,191
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Fri 11/6
3:30 pm-8:59 pm
2 stops34h 29m
Seattle/Tacoma Intl
Fri 11/13
7:45 am-2:40 pm
3 stops25h 55m
$1,394
Porto AlegreSeattle
POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl
POASEA
Porto Alegre Salgado Filho
Thu 12/24
3:45 pm-8:59 pm
2 stops34h 14m
Seattle/Tacoma Intl
Sun 1/3
8:40 am-3:00 pm
3 stops25h 20m
$2,444
Showing 1-10 of 11 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Porto Alegre-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Seattle flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Porto Alegre-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto Alegre-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Porto Alegre to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto Alegre with our price prediction graph.
POA-SEA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from Porto Alegre to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Seattle flight routes